SBIR PHASE I: Holographic Grating Filters for CaII Line Imaging and Emission Spectroscopy

SBIR PHASE I：用于 Call Line 成像和发射光谱的全息光栅滤光片

• 批准号: 9560496
• 负责人: Feng Zhao
• 金额: $ 7.5万
• 依托单位: Accuwave Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-02-01 至 1996-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9560496&HistoricalAwards=false
• 关键词: SBIR; PHASE; Holographic; Grating; Filters

*** 9560496 Zhao This Small Business Innovation Research Phase I project will develop compact, low cost, ultra-narrow bandwidth (approx. O.1 A) holographic filters for solar imaging at the CaII line (3933 A). This addresses a key requirement for narrow band width filters in this wavelength region because of the difficulty in fabricating Lyot and similar interference filters with sufficient spectral resolution and optical quality in the blue to W region. In this program, the feasibility of recording high efficiency and low f-number (f/15 or lower) holographic imaging filters using photorefractive LiNbO3 crystals will be demonstrated. Recording holograms at other blue to W wavelengths in processed LiNbO3 crystals will also be investigated. This research program is expected to produce data on the optimum material characteristics and limits of recording high efficiency gratings at short wavelengths. Anticipated commercial applications of this technology include filters for solar astronomy, emission spectroscopy and pollution monitoring using optical remote sensing, and solar blind filters for free-space optical communication. Potential applications include: W narrow bandwidth filters for optical remote sensing; pollutant, chemical, metal, and mineral detection; solar-blind filters for free-space optical communications; high density optical disks and holographic data storage. ***

*** 9560496 赵 这个小型企业创新研究第一阶段项目将开发紧凑、低成本、超窄带宽（约 O.1 A）全息滤光片，用于 CaII 线（3933 A）的太阳成像。 这满足了该波长区域内窄带宽度滤光片的关键要求，因为在蓝色到白色区域内制造具有足够光谱分辨率和光学质量的 Lyot 和类似干涉滤光片很困难。 在该项目中，将展示使用光折变LiNbO3晶体记录高效率和低f数（f/15或更低）全息成像滤光片的可行性。 还将研究在加工过的 LiNbO3 晶体中记录其他蓝色到波长的全息图。 该研究计划预计将产生有关最佳材料特性和短波长记录高效光栅限制的数据。 该技术的预期商业应用包括用于太阳天文学、发射光谱和使用光学遥感的污染监测的滤波器，以及用于自由空间光通信的日盲滤波器。 潜在应用包括： 用于光学遥感的 W 窄带滤波器；污染物、化学品、金属和矿物检测；用于自由空间光通信的日盲滤波器；高密度光盘和全息数据存储。 ***